Although today's demo was powered
by MonoDroid the engine is
a cross-platform
.NET game engine, it runs on on Mono-powered systems like
Linux, MacOS X, MonoTouch and MonoDroid as well as Microsoft
.NET powered systems like the XBox360, Windows Phone 7 and
Windows:

If you have an iPad, you can try the Zombie Party game on
the AppStore, it is the first game powered by DeltaEngine.
ExDream is the group
behind DeltaEngine.

For information on how the demo was built check
out this
blog post. The engine will be open sourced this year.